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-rw-r--r--sim/sh/interp.c1603
1 files changed, 0 insertions, 1603 deletions
diff --git a/sim/sh/interp.c b/sim/sh/interp.c
deleted file mode 100644
index 4d7c5cf4399..00000000000
--- a/sim/sh/interp.c
+++ /dev/null
@@ -1,1603 +0,0 @@
-/* Simulator for the Hitachi SH architecture.
-
- Written by Steve Chamberlain of Cygnus Support.
- sac@cygnus.com
-
- This file is part of SH sim
-
-
- THIS SOFTWARE IS NOT COPYRIGHTED
-
- Cygnus offers the following for use in the public domain. Cygnus
- makes no warranty with regard to the software or it's performance
- and the user accepts the software "AS IS" with all faults.
-
- CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
- THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
-*/
-
-#include "config.h"
-
-#include <signal.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "sysdep.h"
-#include "bfd.h"
-#include "callback.h"
-#include "remote-sim.h"
-
-/* This file is local - if newlib changes, then so should this. */
-#include "syscall.h"
-
-#include <math.h>
-
-#ifdef _WIN32
-#include <float.h> /* Needed for _isnan() */
-#define isnan _isnan
-#endif
-
-#ifndef SIGBUS
-#define SIGBUS SIGSEGV
-#endif
-
-#ifndef SIGQUIT
-#define SIGQUIT SIGTERM
-#endif
-
-#ifndef SIGTRAP
-#define SIGTRAP 5
-#endif
-
-#define O_RECOMPILE 85
-#define DEFINE_TABLE
-#define DISASSEMBLER_TABLE
-
-/* Define the rate at which the simulator should poll the host
- for a quit. */
-#define POLL_QUIT_INTERVAL 0x60000
-
-typedef union
-{
-
- struct
- {
- /* On targets like sparc-sun-solaris, fregs will be aligned on a 64 bit
- boundary (because of the d member). To avoid padding between
- registers - which whould make the job of sim_fetch_register harder,
- we add padding at the start. */
- int pad_dummy;
- int regs[16];
- int pc;
- int pr;
-
- int gbr;
- int vbr;
- int mach;
- int macl;
-
- int sr;
-
- int fpul;
-
- int fpscr;
-
- /* sh3e */
- union fregs_u
- {
- float f[16];
- double d[8];
- int i[16];
- }
- fregs[2];
-
- int ssr;
- int spc;
- /* sh3 */
- int bank[2][8];
-
- int ticks;
- int stalls;
- int memstalls;
- int cycles;
- int insts;
-
- int prevlock;
- int thislock;
- int exception;
-
- int end_of_registers;
-
- int msize;
-#define PROFILE_FREQ 1
-#define PROFILE_SHIFT 2
- int profile;
- unsigned short *profile_hist;
- unsigned char *memory;
- }
- asregs;
- int asints[40];
-} saved_state_type;
-
-saved_state_type saved_state;
-
-
-/* These variables are at file scope so that functions other than
- sim_resume can use the fetch/store macros */
-
-static int target_little_endian;
-static int host_little_endian;
-
-#if 1
-static int maskl = ~0;
-static int maskw = ~0;
-#endif
-
-static SIM_OPEN_KIND sim_kind;
-static char *myname;
-
-
-/* Short hand definitions of the registers */
-
-#define SBIT(x) ((x)&sbit)
-#define R0 saved_state.asregs.regs[0]
-#define Rn saved_state.asregs.regs[n]
-#define Rm saved_state.asregs.regs[m]
-#define UR0 (unsigned int)(saved_state.asregs.regs[0])
-#define UR (unsigned int)R
-#define UR (unsigned int)R
-#define SR0 saved_state.asregs.regs[0]
-#define GBR saved_state.asregs.gbr
-#define VBR saved_state.asregs.vbr
-#define SSR saved_state.asregs.ssr
-#define SPC saved_state.asregs.spc
-#define MACH saved_state.asregs.mach
-#define MACL saved_state.asregs.macl
-#define FPUL saved_state.asregs.fpul
-
-#define PC pc
-
-
-
-/* Alternate bank of registers r0-r6 */
-
-/* Note: code controling SR handles flips between BANK0 and BANK1 */
-#define Rn_BANK(n) (saved_state.asregs.bank[!SR_RB][(n)])
-#define SET_Rn_BANK(n, EXP) do { saved_state.asregs.bank[!SR_RB][(n)] = (EXP); } while (0)
-
-
-/* Manipulate SR */
-
-#define SR_MASK_M (1 << 9)
-#define SR_MASK_Q (1 << 8)
-#define SR_MASK_I (0xf << 4)
-#define SR_MASK_S (1 << 1)
-#define SR_MASK_T (1 << 0)
-
-#define SR_MASK_BL (1 << 28)
-#define SR_MASK_RB (1 << 29)
-#define SR_MASK_MD (1 << 30)
-
-#define M ((saved_state.asregs.sr & SR_MASK_M) != 0)
-#define Q ((saved_state.asregs.sr & SR_MASK_Q) != 0)
-#define S ((saved_state.asregs.sr & SR_MASK_S) != 0)
-#define T ((saved_state.asregs.sr & SR_MASK_T) != 0)
-
-#define SR_BL ((saved_state.asregs.sr & SR_MASK_BL) != 0)
-#define SR_RB ((saved_state.asregs.sr & SR_MASK_RB) != 0)
-#define SR_MD ((saved_state.asregs.sr & SR_MASK_MD) != 0)
-
-/* Note: don't use this for privileged bits */
-#define SET_SR_BIT(EXP, BIT) \
-do { \
- if ((EXP) & 1) \
- saved_state.asregs.sr |= (BIT); \
- else \
- saved_state.asregs.sr &= ~(BIT); \
-} while (0)
-
-#define SET_SR_M(EXP) SET_SR_BIT ((EXP), SR_MASK_M)
-#define SET_SR_Q(EXP) SET_SR_BIT ((EXP), SR_MASK_Q)
-#define SET_SR_S(EXP) SET_SR_BIT ((EXP), SR_MASK_S)
-#define SET_SR_T(EXP) SET_SR_BIT ((EXP), SR_MASK_T)
-
-#define GET_SR() (saved_state.asregs.sr - 0)
-#define SET_SR(x) set_sr (x)
-static void
-set_sr (new_sr)
- int new_sr;
-{
- /* do we need to swap banks */
- int old_gpr = (SR_MD ? !SR_RB : 0);
- int new_gpr = ((new_sr & SR_MASK_MD)
- ? (new_sr & SR_MASK_RB) == 0
- : 0);
- if (old_gpr != new_gpr)
- {
- int i;
- for (i = 0; i < 8; i++)
- {
- saved_state.asregs.bank[old_gpr][i] = saved_state.asregs.regs[i];
- saved_state.asregs.regs[i] = saved_state.asregs.bank[new_gpr][i];
- }
- }
-}
-
-
-/* Manipulate FPSCR */
-
-#define FPSCR_MASK_FR (1 << 21)
-#define FPSCR_MASK_SZ (1 << 20)
-#define FPSCR_MASK_PR (1 << 19)
-
-#define FPSCR_FR ((GET_FPSCR() & FPSCR_MASK_FR) != 0)
-#define FPSCR_SZ ((GET_FPSCR() & FPSCR_MASK_SZ) != 0)
-#define FPSCR_PR ((GET_FPSCR() & FPSCR_MASK_PR) != 0)
-
-static void
-set_fpscr1 (x)
- int x;
-{
- int old = saved_state.asregs.fpscr;
- saved_state.asregs.fpscr = (x);
- /* swap the floating point register banks */
- if ((saved_state.asregs.fpscr ^ old) & FPSCR_MASK_FR)
- {
- union fregs_u tmpf = saved_state.asregs.fregs[0];
- saved_state.asregs.fregs[0] = saved_state.asregs.fregs[1];
- saved_state.asregs.fregs[1] = tmpf;
- }
-}
-
-#define GET_FPSCR() (saved_state.asregs.fpscr)
-#define SET_FPSCR(x) \
-do { \
- set_fpscr1 (x); \
-} while (0)
-
-
-int
-fail ()
-{
- abort ();
-}
-
-int
-special_address (addr, bits_written, data)
- void *addr;
- int bits_written, data;
-{
- if ((unsigned) addr >> 24 == 0xf0 && bits_written == 32 && (data & 1) == 0)
- /* This invalidates (if not associative) or might invalidate
- (if associative) an instruction cache line. This is used for
- trampolines. Since we don't simulate the cache, this is a no-op
- as far as the simulator is concerned. */
- return 1;
- /* We can't do anything useful with the other stuff, so fail. */
- return 0;
-}
-
-/* This function exists solely for the purpose of setting a breakpoint to
- catch simulated bus errors when running the simulator under GDB. */
-
-void
-bp_holder ()
-{
-}
-
-/* FIXME: sim_resume should be renamed to sim_engine_run. sim_resume
- being implemented by ../common/sim_resume.c and the below should
- make a call to sim_engine_halt */
-
-#define BUSERROR(addr, mask, bits_written, data) \
- if (addr & ~mask) \
- { \
- if (special_address (addr, bits_written, data)) \
- return; \
- saved_state.asregs.exception = SIGBUS; \
- bp_holder (); \
- }
-
-/* Define this to enable register lifetime checking.
- The compiler generates "add #0,rn" insns to mark registers as invalid,
- the simulator uses this info to call fail if it finds a ref to an invalid
- register before a def
-
- #define PARANOID
-*/
-
-#ifdef PARANOID
-int valid[16];
-#define CREF(x) if(!valid[x]) fail();
-#define CDEF(x) valid[x] = 1;
-#define UNDEF(x) valid[x] = 0;
-#else
-#define CREF(x)
-#define CDEF(x)
-#define UNDEF(x)
-#endif
-
-static void parse_and_set_memory_size PARAMS ((char *str));
-
-static int IOMEM PARAMS ((int addr, int write, int value));
-
-static host_callback *callback;
-
-
-
-/* Floating point registers */
-
-#define DR(n) (get_dr (n))
-static double
-get_dr (n)
- int n;
-{
- n = (n & ~1);
- if (host_little_endian)
- {
- union
- {
- int i[2];
- double d;
- } dr;
- dr.i[1] = saved_state.asregs.fregs[0].i[n + 0];
- dr.i[0] = saved_state.asregs.fregs[0].i[n + 1];
- return dr.d;
- }
- else
- return (saved_state.asregs.fregs[0].d[n >> 1]);
-}
-
-#define SET_DR(n, EXP) set_dr ((n), (EXP))
-static void
-set_dr (n, exp)
- int n;
- double exp;
-{
- n = (n & ~1);
- if (host_little_endian)
- {
- union
- {
- int i[2];
- double d;
- } dr;
- dr.d = exp;
- saved_state.asregs.fregs[0].i[n + 0] = dr.i[1];
- saved_state.asregs.fregs[0].i[n + 1] = dr.i[0];
- }
- else
- saved_state.asregs.fregs[0].d[n >> 1] = exp;
-}
-
-#define SET_FI(n,EXP) (saved_state.asregs.fregs[0].i[(n)] = (EXP))
-#define FI(n) (saved_state.asregs.fregs[0].i[(n)])
-
-#define FR(n) (saved_state.asregs.fregs[0].f[(n)])
-#define SET_FR(n,EXP) (saved_state.asregs.fregs[0].f[(n)] = (EXP))
-
-#define XD_TO_XF(n) ((((n) & 1) << 5) | ((n) & 0x1e))
-#define XF(n) (saved_state.asregs.fregs[(n) >> 5].i[(n) & 0x1f])
-#define SET_XF(n,EXP) (saved_state.asregs.fregs[(n) >> 5].i[(n) & 0x1f] = (EXP))
-
-
-#define FP_OP(n, OP, m) \
-{ \
- if (FPSCR_PR) \
- { \
- if (((n) & 1) || ((m) & 1)) \
- saved_state.asregs.exception = SIGILL; \
- else \
- SET_DR(n, (DR(n) OP DR(m))); \
- } \
- else \
- SET_FR(n, (FR(n) OP FR(m))); \
-} while (0)
-
-#define FP_UNARY(n, OP) \
-{ \
- if (FPSCR_PR) \
- { \
- if ((n) & 1) \
- saved_state.asregs.exception = SIGILL; \
- else \
- SET_DR(n, (OP (DR(n)))); \
- } \
- else \
- SET_FR(n, (OP (FR(n)))); \
-} while (0)
-
-#define FP_CMP(n, OP, m) \
-{ \
- if (FPSCR_PR) \
- { \
- if (((n) & 1) || ((m) & 1)) \
- saved_state.asregs.exception = SIGILL; \
- else \
- SET_SR_T (DR(n) OP DR(m)); \
- } \
- else \
- SET_SR_T (FR(n) OP FR(m)); \
-} while (0)
-
-
-
-static void INLINE
-wlat_little (memory, x, value, maskl)
- unsigned char *memory;
-{
- int v = value;
- unsigned char *p = memory + ((x) & maskl);
- BUSERROR(x, maskl, 32, v);
- p[3] = v >> 24;
- p[2] = v >> 16;
- p[1] = v >> 8;
- p[0] = v;
-}
-
-static void INLINE
-wwat_little (memory, x, value, maskw)
- unsigned char *memory;
-{
- int v = value;
- unsigned char *p = memory + ((x) & maskw);
- BUSERROR(x, maskw, 16, v);
-
- p[1] = v >> 8;
- p[0] = v;
-}
-
-static void INLINE
-wbat_any (memory, x, value, maskb)
- unsigned char *memory;
-{
- unsigned char *p = memory + (x & maskb);
- if (x > 0x5000000)
- IOMEM (x, 1, value);
- BUSERROR(x, maskb, 8, value);
-
- p[0] = value;
-}
-
-static void INLINE
-wlat_big (memory, x, value, maskl)
- unsigned char *memory;
-{
- int v = value;
- unsigned char *p = memory + ((x) & maskl);
- BUSERROR(x, maskl, 32, v);
-
- p[0] = v >> 24;
- p[1] = v >> 16;
- p[2] = v >> 8;
- p[3] = v;
-}
-
-static void INLINE
-wwat_big (memory, x, value, maskw)
- unsigned char *memory;
-{
- int v = value;
- unsigned char *p = memory + ((x) & maskw);
- BUSERROR(x, maskw, 16, v);
-
- p[0] = v >> 8;
- p[1] = v;
-}
-
-static void INLINE
-wbat_big (memory, x, value, maskb)
- unsigned char *memory;
-{
- unsigned char *p = memory + (x & maskb);
- BUSERROR(x, maskb, 8, value);
-
- if (x > 0x5000000)
- IOMEM (x, 1, value);
- p[0] = value;
-}
-
-/* Read functions */
-
-static int INLINE
-rlat_little (memory, x, maskl)
- unsigned char *memory;
-{
- unsigned char *p = memory + ((x) & maskl);
- BUSERROR(x, maskl, -32, -1);
-
- return (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
-}
-
-static int INLINE
-rwat_little (memory, x, maskw)
- unsigned char *memory;
-{
- unsigned char *p = memory + ((x) & maskw);
- BUSERROR(x, maskw, -16, -1);
-
- return (p[1] << 8) | p[0];
-}
-
-static int INLINE
-rbat_any (memory, x, maskb)
- unsigned char *memory;
-{
- unsigned char *p = memory + ((x) & maskb);
- BUSERROR(x, maskb, -8, -1);
-
- return p[0];
-}
-
-static int INLINE
-rlat_big (memory, x, maskl)
- unsigned char *memory;
-{
- unsigned char *p = memory + ((x) & maskl);
- BUSERROR(x, maskl, -32, -1);
-
- return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
-}
-
-static int INLINE
-rwat_big (memory, x, maskw)
- unsigned char *memory;
-{
- unsigned char *p = memory + ((x) & maskw);
- BUSERROR(x, maskw, -16, -1);
-
- return (p[0] << 8) | p[1];
-}
-
-#define RWAT(x) (little_endian ? rwat_little(memory, x, maskw): rwat_big(memory, x, maskw))
-#define RLAT(x) (little_endian ? rlat_little(memory, x, maskl): rlat_big(memory, x, maskl))
-#define RBAT(x) (rbat_any (memory, x, maskb))
-#define WWAT(x,v) (little_endian ? wwat_little(memory, x, v, maskw): wwat_big(memory, x, v, maskw))
-#define WLAT(x,v) (little_endian ? wlat_little(memory, x, v, maskl): wlat_big(memory, x, v, maskl))
-#define WBAT(x,v) (wbat_any (memory, x, v, maskb))
-
-#define RUWAT(x) (RWAT(x) & 0xffff)
-#define RSWAT(x) ((short)(RWAT(x)))
-#define RSBAT(x) (SEXT(RBAT(x)))
-
-#define RDAT(x, n) (do_rdat (memory, (x), (n), (little_endian)))
-static int
-do_rdat (memory, x, n, little_endian)
- char *memory;
- int x;
- int n;
- int little_endian;
-{
- int f0;
- int f1;
- int i = (n & 1);
- int j = (n & ~1);
- if (little_endian)
- {
- f0 = rlat_little (memory, x + 0, maskl);
- f1 = rlat_little (memory, x + 4, maskl);
- }
- else
- {
- f0 = rlat_big (memory, x + 0, maskl);
- f1 = rlat_big (memory, x + 4, maskl);
- }
- saved_state.asregs.fregs[i].i[(j + 0)] = f0;
- saved_state.asregs.fregs[i].i[(j + 1)] = f1;
- return 0;
-}
-
-#define WDAT(x, n) (do_wdat (memory, (x), (n), (little_endian)))
-static int
-do_wdat (memory, x, n, little_endian)
- char *memory;
- int x;
- int n;
- int little_endian;
-{
- int f0;
- int f1;
- int i = (n & 1);
- int j = (n & ~1);
- f0 = saved_state.asregs.fregs[i].i[(j + 0)];
- f1 = saved_state.asregs.fregs[i].i[(j + 1)];
- if (little_endian)
- {
- wlat_little (memory, (x + 0), f0, maskl);
- wlat_little (memory, (x + 4), f1, maskl);
- }
- else
- {
- wlat_big (memory, (x + 0), f0, maskl);
- wlat_big (memory, (x + 4), f1, maskl);
- }
- return 0;
-}
-
-
-#define MA(n) do { memstalls += (((pc & 3) != 0) ? (n) : ((n) - 1)); } while (0)
-
-#define SEXT(x) (((x & 0xff) ^ (~0x7f))+0x80)
-#define SEXT12(x) (((x & 0xfff) ^ 0x800) - 0x800)
-#define SEXTW(y) ((int)((short)y))
-
-#define Delay_Slot(TEMPPC) iword = RUWAT(TEMPPC); goto top;
-
-int empty[16];
-
-#define L(x) thislock = x;
-#define TL(x) if ((x) == prevlock) stalls++;
-#define TB(x,y) if ((x) == prevlock || (y)==prevlock) stalls++;
-
-#if defined(__GO32__) || defined(_WIN32)
-int sim_memory_size = 19;
-#else
-int sim_memory_size = 24;
-#endif
-
-static int sim_profile_size = 17;
-static int nsamples;
-
-#undef TB
-#define TB(x,y)
-
-#define SMR1 (0x05FFFEC8) /* Channel 1 serial mode register */
-#define BRR1 (0x05FFFEC9) /* Channel 1 bit rate register */
-#define SCR1 (0x05FFFECA) /* Channel 1 serial control register */
-#define TDR1 (0x05FFFECB) /* Channel 1 transmit data register */
-#define SSR1 (0x05FFFECC) /* Channel 1 serial status register */
-#define RDR1 (0x05FFFECD) /* Channel 1 receive data register */
-
-#define SCI_RDRF 0x40 /* Recieve data register full */
-#define SCI_TDRE 0x80 /* Transmit data register empty */
-
-static int
-IOMEM (addr, write, value)
- int addr;
- int write;
- int value;
-{
- if (write)
- {
- switch (addr)
- {
- case TDR1:
- if (value != '\r')
- {
- putchar (value);
- fflush (stdout);
- }
- break;
- }
- }
- else
- {
- switch (addr)
- {
- case RDR1:
- return getchar ();
- }
- }
- return 0;
-}
-
-static int
-get_now ()
-{
- return time ((long *) 0);
-}
-
-static int
-now_persec ()
-{
- return 1;
-}
-
-static FILE *profile_file;
-
-static void
-swap (memory, n)
- unsigned char *memory;
- int n;
-{
- int little_endian = target_little_endian;
- WLAT (0, n);
-}
-
-static void
-swap16 (memory, n)
- unsigned char *memory;
- int n;
-{
- int little_endian = target_little_endian;
- WWAT (0, n);
-}
-
-static void
-swapout (n)
- int n;
-{
- if (profile_file)
- {
- char b[4];
- swap (b, n);
- fwrite (b, 4, 1, profile_file);
- }
-}
-
-static void
-swapout16 (n)
- int n;
-{
- char b[4];
- swap16 (b, n);
- fwrite (b, 2, 1, profile_file);
-}
-
-/* Turn a pointer in a register into a pointer into real memory. */
-
-static char *
-ptr (x)
- int x;
-{
- return (char *) (x + saved_state.asregs.memory);
-}
-
-/* Simulate a monitor trap, put the result into r0 and errno into r1 */
-
-static void
-trap (i, regs, memory, maskl, maskw, little_endian)
- int i;
- int *regs;
- unsigned char *memory;
-{
- switch (i)
- {
- case 1:
- printf ("%c", regs[0]);
- break;
- case 2:
- saved_state.asregs.exception = SIGQUIT;
- break;
- case 3: /* FIXME: for backwards compat, should be removed */
- case 34:
- {
- extern int errno;
- int perrno = errno;
- errno = 0;
-
- switch (regs[4])
- {
-
-#if !defined(__GO32__) && !defined(_WIN32)
- case SYS_fork:
- regs[0] = fork ();
- break;
- case SYS_execve:
- regs[0] = execve (ptr (regs[5]), (char **)ptr (regs[6]), (char **)ptr (regs[7]));
- break;
- case SYS_execv:
- regs[0] = execve (ptr (regs[5]),(char **) ptr (regs[6]), 0);
- break;
- case SYS_pipe:
- {
- char *buf;
- int host_fd[2];
-
- buf = ptr (regs[5]);
-
- regs[0] = pipe (host_fd);
-
- WLAT (buf, host_fd[0]);
- buf += 4;
- WLAT (buf, host_fd[1]);
- }
- break;
-
- case SYS_wait:
- regs[0] = wait (ptr (regs[5]));
- break;
-#endif
-
- case SYS_read:
- regs[0] = callback->read (callback, regs[5], ptr (regs[6]), regs[7]);
- break;
- case SYS_write:
- if (regs[5] == 1)
- regs[0] = (int)callback->write_stdout (callback, ptr(regs[6]), regs[7]);
- else
- regs[0] = (int)callback->write (callback, regs[5], ptr (regs[6]), regs[7]);
- break;
- case SYS_lseek:
- regs[0] = callback->lseek (callback,regs[5], regs[6], regs[7]);
- break;
- case SYS_close:
- regs[0] = callback->close (callback,regs[5]);
- break;
- case SYS_open:
- regs[0] = callback->open (callback,ptr (regs[5]), regs[6]);
- break;
- case SYS_exit:
- /* EXIT - caller can look in r5 to work out the reason */
- saved_state.asregs.exception = SIGQUIT;
- regs[0] = regs[5];
- break;
-
- case SYS_stat: /* added at hmsi */
- /* stat system call */
- {
- struct stat host_stat;
- char *buf;
-
- regs[0] = stat (ptr (regs[5]), &host_stat);
-
- buf = ptr (regs[6]);
-
- WWAT (buf, host_stat.st_dev);
- buf += 2;
- WWAT (buf, host_stat.st_ino);
- buf += 2;
- WLAT (buf, host_stat.st_mode);
- buf += 4;
- WWAT (buf, host_stat.st_nlink);
- buf += 2;
- WWAT (buf, host_stat.st_uid);
- buf += 2;
- WWAT (buf, host_stat.st_gid);
- buf += 2;
- WWAT (buf, host_stat.st_rdev);
- buf += 2;
- WLAT (buf, host_stat.st_size);
- buf += 4;
- WLAT (buf, host_stat.st_atime);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- WLAT (buf, host_stat.st_mtime);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- WLAT (buf, host_stat.st_ctime);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- }
- break;
-
-#ifndef _WIN32
- case SYS_chown:
- regs[0] = chown (ptr (regs[5]), regs[6], regs[7]);
- break;
-#endif /* _WIN32 */
- case SYS_chmod:
- regs[0] = chmod (ptr (regs[5]), regs[6]);
- break;
- case SYS_utime:
- /* Cast the second argument to void *, to avoid type mismatch
- if a prototype is present. */
- regs[0] = utime (ptr (regs[5]), (void *) ptr (regs[6]));
- break;
- default:
- abort ();
- }
- regs[1] = callback->get_errno (callback);
- errno = perrno;
- }
- break;
-
- case 0xc3:
- case 255:
- saved_state.asregs.exception = SIGTRAP;
- break;
- }
-
-}
-
-void
-control_c (sig, code, scp, addr)
- int sig;
- int code;
- char *scp;
- char *addr;
-{
- saved_state.asregs.exception = SIGINT;
-}
-
-static int
-div1 (R, iRn2, iRn1/*, T*/)
- int *R;
- int iRn1;
- int iRn2;
- /* int T;*/
-{
- unsigned long tmp0;
- unsigned char old_q, tmp1;
-
- old_q = Q;
- SET_SR_Q ((unsigned char) ((0x80000000 & R[iRn1]) != 0));
- R[iRn1] <<= 1;
- R[iRn1] |= (unsigned long) T;
-
- switch (old_q)
- {
- case 0:
- switch (M)
- {
- case 0:
- tmp0 = R[iRn1];
- R[iRn1] -= R[iRn2];
- tmp1 = (R[iRn1] > tmp0);
- switch (Q)
- {
- case 0:
- SET_SR_Q (tmp1);
- break;
- case 1:
- SET_SR_Q ((unsigned char) (tmp1 == 0));
- break;
- }
- break;
- case 1:
- tmp0 = R[iRn1];
- R[iRn1] += R[iRn2];
- tmp1 = (R[iRn1] < tmp0);
- switch (Q)
- {
- case 0:
- SET_SR_Q ((unsigned char) (tmp1 == 0));
- break;
- case 1:
- SET_SR_Q (tmp1);
- break;
- }
- break;
- }
- break;
- case 1:
- switch (M)
- {
- case 0:
- tmp0 = R[iRn1];
- R[iRn1] += R[iRn2];
- tmp1 = (R[iRn1] < tmp0);
- switch (Q)
- {
- case 0:
- SET_SR_Q (tmp1);
- break;
- case 1:
- SET_SR_Q ((unsigned char) (tmp1 == 0));
- break;
- }
- break;
- case 1:
- tmp0 = R[iRn1];
- R[iRn1] -= R[iRn2];
- tmp1 = (R[iRn1] > tmp0);
- switch (Q)
- {
- case 0:
- SET_SR_Q ((unsigned char) (tmp1 == 0));
- break;
- case 1:
- SET_SR_Q (tmp1);
- break;
- }
- break;
- }
- break;
- }
- /*T = (Q == M);*/
- SET_SR_T (Q == M);
- /*return T;*/
-}
-
-static void
-dmul (sign, rm, rn)
- int sign;
- unsigned int rm;
- unsigned int rn;
-{
- unsigned long RnL, RnH;
- unsigned long RmL, RmH;
- unsigned long temp0, temp1, temp2, temp3;
- unsigned long Res2, Res1, Res0;
-
- RnL = rn & 0xffff;
- RnH = (rn >> 16) & 0xffff;
- RmL = rm & 0xffff;
- RmH = (rm >> 16) & 0xffff;
- temp0 = RmL * RnL;
- temp1 = RmH * RnL;
- temp2 = RmL * RnH;
- temp3 = RmH * RnH;
- Res2 = 0;
- Res1 = temp1 + temp2;
- if (Res1 < temp1)
- Res2 += 0x00010000;
- temp1 = (Res1 << 16) & 0xffff0000;
- Res0 = temp0 + temp1;
- if (Res0 < temp0)
- Res2 += 1;
- Res2 += ((Res1 >> 16) & 0xffff) + temp3;
-
- if (sign)
- {
- if (rn & 0x80000000)
- Res2 -= rm;
- if (rm & 0x80000000)
- Res2 -= rn;
- }
-
- MACH = Res2;
- MACL = Res0;
-}
-
-static void
-macw (regs, memory, n, m)
- int *regs;
- unsigned char *memory;
- int m, n;
-{
- int little_endian = target_little_endian;
- long tempm, tempn;
- long prod, macl, sum;
-
- tempm=RSWAT(regs[m]); regs[m]+=2;
- tempn=RSWAT(regs[n]); regs[n]+=2;
-
- macl = MACL;
- prod = (long)(short) tempm * (long)(short) tempn;
- sum = prod + macl;
- if (S)
- {
- if ((~(prod ^ macl) & (sum ^ prod)) < 0)
- {
- /* MACH's lsb is a sticky overflow bit. */
- MACH |= 1;
- /* Store the smallest negative number in MACL if prod is
- negative, and the largest positive number otherwise. */
- sum = 0x7fffffff + (prod < 0);
- }
- }
- else
- {
- long mach;
- /* Add to MACH the sign extended product, and carry from low sum. */
- mach = MACH + (-(prod < 0)) + ((unsigned long) sum < prod);
- /* Sign extend at 10:th bit in MACH. */
- MACH = (mach & 0x1ff) | -(mach & 0x200);
- }
- MACL = sum;
-}
-
-/* Set the memory size to the power of two provided. */
-
-void
-sim_size (power)
- int power;
-
-{
- saved_state.asregs.msize = 1 << power;
-
- sim_memory_size = power;
-
- if (saved_state.asregs.memory)
- {
- free (saved_state.asregs.memory);
- }
-
- saved_state.asregs.memory =
- (unsigned char *) calloc (64, saved_state.asregs.msize / 64);
-
- if (!saved_state.asregs.memory)
- {
- fprintf (stderr,
- "Not enough VM for simulation of %d bytes of RAM\n",
- saved_state.asregs.msize);
-
- saved_state.asregs.msize = 1;
- saved_state.asregs.memory = (unsigned char *) calloc (1, 1);
- }
-}
-
-static void
-init_pointers ()
-{
- host_little_endian = 0;
- *(char*)&host_little_endian = 1;
- host_little_endian &= 1;
-
- if (saved_state.asregs.msize != 1 << sim_memory_size)
- {
- sim_size (sim_memory_size);
- }
-
- if (saved_state.asregs.profile && !profile_file)
- {
- profile_file = fopen ("gmon.out", "wb");
- /* Seek to where to put the call arc data */
- nsamples = (1 << sim_profile_size);
-
- fseek (profile_file, nsamples * 2 + 12, 0);
-
- if (!profile_file)
- {
- fprintf (stderr, "Can't open gmon.out\n");
- }
- else
- {
- saved_state.asregs.profile_hist =
- (unsigned short *) calloc (64, (nsamples * sizeof (short) / 64));
- }
- }
-}
-
-static void
-dump_profile ()
-{
- unsigned int minpc;
- unsigned int maxpc;
- unsigned short *p;
- int i;
-
- p = saved_state.asregs.profile_hist;
- minpc = 0;
- maxpc = (1 << sim_profile_size);
-
- fseek (profile_file, 0L, 0);
- swapout (minpc << PROFILE_SHIFT);
- swapout (maxpc << PROFILE_SHIFT);
- swapout (nsamples * 2 + 12);
- for (i = 0; i < nsamples; i++)
- swapout16 (saved_state.asregs.profile_hist[i]);
-
-}
-
-static void
-gotcall (from, to)
- int from;
- int to;
-{
- swapout (from);
- swapout (to);
- swapout (1);
-}
-
-#define MMASKB ((saved_state.asregs.msize -1) & ~0)
-
-int
-sim_stop (sd)
- SIM_DESC sd;
-{
- saved_state.asregs.exception = SIGINT;
- return 1;
-}
-
-void
-sim_resume (sd, step, siggnal)
- SIM_DESC sd;
- int step, siggnal;
-{
- register unsigned int pc;
- register int cycles = 0;
- register int stalls = 0;
- register int memstalls = 0;
- register int insts = 0;
- register int prevlock;
- register int thislock;
- register unsigned int doprofile;
- register int pollcount = 0;
- register int little_endian = target_little_endian;
-
- int tick_start = get_now ();
- void (*prev) ();
- void (*prev_fpe) ();
- extern unsigned char sh_jump_table0[];
-
- register unsigned char *jump_table = sh_jump_table0;
-
- register int *R = &(saved_state.asregs.regs[0]);
- /*register int T;*/
- register int PR;
-
- register int maskb = ((saved_state.asregs.msize - 1) & ~0);
- register int maskw = ((saved_state.asregs.msize - 1) & ~1);
- register int maskl = ((saved_state.asregs.msize - 1) & ~3);
- register unsigned char *memory;
- register unsigned int sbit = ((unsigned int) 1 << 31);
-
- prev = signal (SIGINT, control_c);
- prev_fpe = signal (SIGFPE, SIG_IGN);
-
- init_pointers ();
-
- memory = saved_state.asregs.memory;
-
- if (step)
- {
- saved_state.asregs.exception = SIGTRAP;
- }
- else
- {
- saved_state.asregs.exception = 0;
- }
-
- pc = saved_state.asregs.pc;
- PR = saved_state.asregs.pr;
- /*T = GET_SR () & SR_MASK_T;*/
- prevlock = saved_state.asregs.prevlock;
- thislock = saved_state.asregs.thislock;
- doprofile = saved_state.asregs.profile;
-
- /* If profiling not enabled, disable it by asking for
- profiles infrequently. */
- if (doprofile == 0)
- doprofile = ~0;
-
- do
- {
- register unsigned int iword = RUWAT (pc);
- register unsigned int ult;
- register unsigned int nia = pc + 2;
-#ifndef ACE_FAST
- insts++;
-#endif
- top:
-
-#include "code.c"
-
-
- pc = nia;
-
- if (--pollcount < 0)
- {
- pollcount = POLL_QUIT_INTERVAL;
- if ((*callback->poll_quit) != NULL
- && (*callback->poll_quit) (callback))
- {
- sim_stop (sd);
- }
- }
-
-#ifndef ACE_FAST
- prevlock = thislock;
- thislock = 30;
- cycles++;
-
- if (cycles >= doprofile)
- {
-
- saved_state.asregs.cycles += doprofile;
- cycles -= doprofile;
- if (saved_state.asregs.profile_hist)
- {
- int n = pc >> PROFILE_SHIFT;
- if (n < nsamples)
- {
- int i = saved_state.asregs.profile_hist[n];
- if (i < 65000)
- saved_state.asregs.profile_hist[n] = i + 1;
- }
-
- }
- }
-#endif
- }
- while (!saved_state.asregs.exception);
-
- if (saved_state.asregs.exception == SIGILL
- || saved_state.asregs.exception == SIGBUS)
- {
- pc -= 2;
- }
-
- saved_state.asregs.ticks += get_now () - tick_start;
- saved_state.asregs.cycles += cycles;
- saved_state.asregs.stalls += stalls;
- saved_state.asregs.memstalls += memstalls;
- saved_state.asregs.insts += insts;
- saved_state.asregs.pc = pc;
- /* restore the T and other cached SR bits */
- SET_SR (GET_SR());
- saved_state.asregs.pr = PR;
-
- saved_state.asregs.prevlock = prevlock;
- saved_state.asregs.thislock = thislock;
-
- if (profile_file)
- {
- dump_profile ();
- }
-
- signal (SIGFPE, prev_fpe);
- signal (SIGINT, prev);
-}
-
-int
-sim_write (sd, addr, buffer, size)
- SIM_DESC sd;
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
-{
- int i;
-
- init_pointers ();
-
- for (i = 0; i < size; i++)
- {
- saved_state.asregs.memory[MMASKB & (addr + i)] = buffer[i];
- }
- return size;
-}
-
-int
-sim_read (sd, addr, buffer, size)
- SIM_DESC sd;
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
-{
- int i;
-
- init_pointers ();
-
- for (i = 0; i < size; i++)
- {
- buffer[i] = saved_state.asregs.memory[MMASKB & (addr + i)];
- }
- return size;
-}
-
-/* We have to add one to RN as an index into asints because of the padding
- added at the start of asregs. */
-int
-sim_store_register (sd, rn, memory, length)
- SIM_DESC sd;
- int rn;
- unsigned char *memory;
- int length;
-{
- int little_endian;
- init_pointers ();
- little_endian = target_little_endian;
- if (&saved_state.asints[rn+1]
- == &saved_state.asregs.fpscr)
- set_fpscr1 (RLAT(0));
- else
- saved_state.asints[rn+1] = RLAT(0);
- return -1;
-}
-
-int
-sim_fetch_register (sd, rn, memory, length)
- SIM_DESC sd;
- int rn;
- unsigned char *memory;
- int length;
-{
- int little_endian;
- init_pointers ();
- little_endian = target_little_endian;
- WLAT (0, saved_state.asints[rn+1]);
- return -1;
-}
-
-int
-sim_trace (sd)
- SIM_DESC sd;
-{
- return 0;
-}
-
-void
-sim_stop_reason (sd, reason, sigrc)
- SIM_DESC sd;
- enum sim_stop *reason;
- int *sigrc;
-{
- /* The SH simulator uses SIGQUIT to indicate that the program has
- exited, so we must check for it here and translate it to exit. */
- if (saved_state.asregs.exception == SIGQUIT)
- {
- *reason = sim_exited;
- *sigrc = saved_state.asregs.regs[5];
- }
- else
- {
- *reason = sim_stopped;
- *sigrc = saved_state.asregs.exception;
- }
-}
-
-void
-sim_info (sd, verbose)
- SIM_DESC sd;
- int verbose;
-{
- double timetaken = (double) saved_state.asregs.ticks / (double) now_persec ();
- double virttime = saved_state.asregs.cycles / 36.0e6;
-
- callback->printf_filtered (callback, "\n\n# instructions executed %10d\n",
- saved_state.asregs.insts);
- callback->printf_filtered (callback, "# cycles %10d\n",
- saved_state.asregs.cycles);
- callback->printf_filtered (callback, "# pipeline stalls %10d\n",
- saved_state.asregs.stalls);
- callback->printf_filtered (callback, "# misaligned load/store %10d\n",
- saved_state.asregs.memstalls);
- callback->printf_filtered (callback, "# real time taken %10.4f\n",
- timetaken);
- callback->printf_filtered (callback, "# virtual time taken %10.4f\n",
- virttime);
- callback->printf_filtered (callback, "# profiling size %10d\n",
- sim_profile_size);
- callback->printf_filtered (callback, "# profiling frequency %10d\n",
- saved_state.asregs.profile);
- callback->printf_filtered (callback, "# profile maxpc %10x\n",
- (1 << sim_profile_size) << PROFILE_SHIFT);
-
- if (timetaken != 0)
- {
- callback->printf_filtered (callback, "# cycles/second %10d\n",
- (int) (saved_state.asregs.cycles / timetaken));
- callback->printf_filtered (callback, "# simulation ratio %10.4f\n",
- virttime / timetaken);
- }
-}
-
-void
-sim_set_profile (n)
- int n;
-{
- saved_state.asregs.profile = n;
-}
-
-void
-sim_set_profile_size (n)
- int n;
-{
- sim_profile_size = n;
-}
-
-SIM_DESC
-sim_open (kind, cb, abfd, argv)
- SIM_OPEN_KIND kind;
- host_callback *cb;
- struct _bfd *abfd;
- char **argv;
-{
- char **p;
- int endian_set = 0;
-
- sim_kind = kind;
- myname = argv[0];
- callback = cb;
-
- for (p = argv + 1; *p != NULL; ++p)
- {
- if (strcmp (*p, "-E") == 0)
- {
- ++p;
- if (*p == NULL)
- {
- /* FIXME: This doesn't use stderr, but then the rest of the
- file doesn't either. */
- callback->printf_filtered (callback, "Missing argument to `-E'.\n");
- return 0;
- }
- target_little_endian = strcmp (*p, "big") != 0;
- endian_set = 1;
- }
- else if (isdigit (**p))
- parse_and_set_memory_size (*p);
- }
-
- if (abfd != NULL && ! endian_set)
- target_little_endian = ! bfd_big_endian (abfd);
-
- /* fudge our descriptor for now */
- return (SIM_DESC) 1;
-}
-
-static void
-parse_and_set_memory_size (str)
- char *str;
-{
- int n;
-
- n = strtol (str, NULL, 10);
- if (n > 0 && n <= 24)
- sim_memory_size = n;
- else
- callback->printf_filtered (callback, "Bad memory size %d; must be 1 to 24, inclusive\n", n);
-}
-
-void
-sim_close (sd, quitting)
- SIM_DESC sd;
- int quitting;
-{
- /* nothing to do */
-}
-
-SIM_RC
-sim_load (sd, prog, abfd, from_tty)
- SIM_DESC sd;
- char *prog;
- bfd *abfd;
- int from_tty;
-{
- extern bfd *sim_load_file (); /* ??? Don't know where this should live. */
- bfd *prog_bfd;
-
- prog_bfd = sim_load_file (sd, myname, callback, prog, abfd,
- sim_kind == SIM_OPEN_DEBUG,
- 0, sim_write);
- if (prog_bfd == NULL)
- return SIM_RC_FAIL;
- if (abfd == NULL)
- bfd_close (prog_bfd);
- return SIM_RC_OK;
-}
-
-SIM_RC
-sim_create_inferior (sd, prog_bfd, argv, env)
- SIM_DESC sd;
- struct _bfd *prog_bfd;
- char **argv;
- char **env;
-{
- /* clear the registers */
- memset (&saved_state, 0,
- (char*)&saved_state.asregs.end_of_registers - (char*)&saved_state);
- /* set the PC */
- if (prog_bfd != NULL)
- saved_state.asregs.pc = bfd_get_start_address (prog_bfd);
- return SIM_RC_OK;
-}
-
-void
-sim_do_command (sd, cmd)
- SIM_DESC sd;
- char *cmd;
-{
- char *sms_cmd = "set-memory-size";
- int cmdsize;
-
- if (cmd == NULL || *cmd == '\0')
- {
- cmd = "help";
- }
-
- cmdsize = strlen (sms_cmd);
- if (strncmp (cmd, sms_cmd, cmdsize) == 0 && strchr (" \t", cmd[cmdsize]) != NULL)
- {
- parse_and_set_memory_size (cmd + cmdsize + 1);
- }
- else if (strcmp (cmd, "help") == 0)
- {
- (callback->printf_filtered) (callback, "List of SH simulator commands:\n\n");
- (callback->printf_filtered) (callback, "set-memory-size <n> -- Set the number of address bits to use\n");
- (callback->printf_filtered) (callback, "\n");
- }
- else
- {
- (callback->printf_filtered) (callback, "Error: \"%s\" is not a valid SH simulator command.\n", cmd);
- }
-}
-
-void
-sim_set_callbacks (p)
- host_callback *p;
-{
- callback = p;
-}
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